<template>
    <div class="register-wrapper">
        <div class="register-container">
            <div class="form-header">
                <h2>创建账号</h2>
                <p>开启您的美好旅程</p>
            </div>
            <form @submit.prevent="handleRegister" class="floating-form">
                <div class="input-group">
                    <input type="text" id="username" v-model="username" required maxlength="20" />
                    <label for="username">用户名</label>
                    <span class="highlight"></span>
                </div>
                <div class="input-group">
                    <input type="email" id="email" v-model="email" required />
                    <label for="email">邮箱地址</label>
                    <span class="highlight"></span>
                </div>
                <div class="input-group verification-group">
                    <input type="text" id="verificationCode" v-model="verificationCode" required maxlength="6"/>
                    <label for="verificationCode">验证码</label>
                    <button @click="refreshCaptcha" class="captcha-refresh">
                        <span v-for="(char, index) in captchaText" :key="index" :style="getCharStyle(index)">
                            {{ char }}
                        </span>
                    </button>
                    <!-- <button type="button" @click="sendVerificationCode" class="send-code-btn">获取验证码</button> -->
                    <span class="highlight"></span>
                </div>
                <div class="input-group">
                    <input type="password" id="password" v-model="password" required minlength="6" maxlength="20" />
                    <label for="password">密码</label>
                    <span class="highlight"></span>
                </div>
                <div class="input-group">
                    <input type="password" id="confirmPassword" v-model="confirmPassword" required minlength="6"
                        maxlength="20" />
                    <label for="confirmPassword">确认密码</label>
                    <span class="highlight"></span>
                </div>
                <button type="submit" class="submit-btn" @click="validateCaptcha">
                    <span>立即注册</span>
                    <i class="arrow-icon"></i>
                </button>
                <div class="form-footer">
                    <span>已有账号？</span>
                    <a href="/login">立即登录</a>
                </div>
            </form>
        </div>
    </div>
</template>

<script setup>
import { ref, onMounted } from 'vue'

const username = ref('')
const email = ref('')
var verificationCode = ref('')
const password = ref('')
const confirmPassword = ref('')
var captchaText = ref('') // 验证码文本
const handleRegister = () => {
    console.log({
        username: username.value,
        email: email.value,
        verificationCode: verificationCode.value,
        password: password.value,
        confirmPassword: confirmPassword.value
    })
}

// const sendVerificationCode = () => {
//     console.log('Sending verification code to:', email.value)
// }

const generateCaptcha = () => {
    const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    let captcha = '';
    for (let i = 0; i < 6; i++) { // 生成 6 位验证码
        captcha += chars[Math.floor(Math.random() * chars.length)];
    }
    captchaText.value = captcha;
    verificationCode.value = ''; // 清空用户输入
}

//验证用户输入
const validateCaptcha = () => {
    if (verificationCode.value.toLowerCase() === captchaText.value.toLowerCase()) {
        
        return true;
    } else {
        alert('验证码错误！');
        return false;
    }
}

// 刷新验证码
const refreshCaptcha = () => {
    generateCaptcha();
}

// 为每个字符生成随机样式
const getCharStyle = () => {
    return {
        transform: `rotate(${Math.random() * 20 - 10}deg)`, // 随机旋转角度
        fontSize: `${20 + Math.random() * 10}px`, // 随机字体大小
        color: `#${Math.floor(Math.random() * 16777215).toString(16)}`, // 随机颜色
        display: 'inline-block',
        margin: '0 2px',
    };
}

onMounted(() => {
    generateCaptcha();
});
</script>

<style scoped>
.register-wrapper {
    min-height: 93.5vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 20px;
}

.register-container {
    width: 100%;
    max-width: 480px;
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.form-header {
    text-align: center;
    margin-bottom: 40px;
}

.form-header h2 {
    color: #2c3e50;
    font-size: 32px;
    margin-bottom: 10px;
    font-weight: 700;
}

.form-header p {
    color: #95a5a6;
    font-size: 16px;
}

.floating-form .input-group {
    position: relative;
    margin-bottom: 30px;
}

.input-group input {
    width: 100%;
    max-width: 450px;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: transparent;
}

.input-group button {
    width: 160px;
}

.input-group label {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    padding: 0 5px;
    color: #95a5a6;
    font-size: 16px;
    transition: all 0.3s ease;
    pointer-events: none;
}

.input-group input:focus,
.input-group input:valid {
    border-color: #3498db;
}

.input-group input:focus+label,
.input-group input:valid+label {
    top: 0;
    font-size: 14px;
    color: #3498db;
}

.verification-group {
    display: flex;
    gap: 10px;
}

.verification-group input {
    flex: 1;
}

.send-code-btn {
    padding: 0 20px;
    background: #e8f5fe;
    color: #3498db;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.send-code-btn:hover {
    background: #d0e9fd;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(to right, #3498db, #2980b9);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.arrow-icon {
    border: solid white;
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 3px;
    transform: rotate(-45deg);
}

.form-footer {
    text-align: center;
    margin-top: 20px;
    color: #95a5a6;
}

.form-footer a {
    color: #3498db;
    text-decoration: none;
    margin-left: 5px;
    font-weight: 600;
}

.form-footer a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .register-container {
        padding: 20px;
    }

    .form-header h2 {
        font-size: 24px;
    }

    .input-group input {
        padding: 12px;
    }
}

@media (max-width: 768px) {
    .register-container {
        max-width: 400px;
        padding: 30px;
    }

    .form-header h2 {
        font-size: 28px;
    }

    .form-header p {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .register-container {
        padding: 20px;
        margin: 10px;
        max-width: 100%;
    }

    .form-header h2 {
        font-size: 24px;
    }

    .form-header p {
        font-size: 14px;
    }

    .input-group input {
        padding: 12px;
        font-size: 14px;
    }

    .input-group label {
        font-size: 14px;
    }

    .verification-group {
        flex-direction: column;
        gap: 5px;
    }

    .send-code-btn {
        width: 100%;
        padding: 12px;
    }

    .submit-btn {
        padding: 12px;
        font-size: 16px;
    }
}

@media (max-width: 320px) {
    .register-container {
        padding: 15px;
    }

    .form-header h2 {
        font-size: 20px;
    }

    .input-group {
        margin-bottom: 20px;
    }
}
</style>